Allen-Bradley 1746-P1 SLC 500 Power Supply Rack Module

Allen-Bradley 1746-P1 SLC 500 Power Supply Rack Module is a compact, rack-mount power source designed to live inside an SLC 500 rack, providing the necessary DC rails to run the backplane and I/O modules. It accepts a wide AC input range: 85–132 VAC or 170–265 VAC, at 47–63 Hz, enabling operation from common plant power sources without a dedicated transformer. The module delivers a 5 V DC output up to 2 A to feed the rack's digital logic and I/O circuitry, while also exposing a 24 V DC sensor supply via PWR OUT + 24 V DC and the PWR OUT COM return, allowing sensors and external devices to be powered from a single supply. This dual-rail arrangement supports typical SLC 500 configurations that include a CPU, discrete I/O modules, and other peripherals in a single backplane. The 1746-P1 is part of the SLC 500 modular power supplies family, and its compact form factor is intended to retrofit or expand existing 1746 racks where a dedicated power rail is required. When wiring, connect the 24 VDC sensor circuit to the PWR OUT terminals and use the 5 V rail for the backplane logic and I/O, ensuring the total load stays within the module's rated capacities. Catalog number: 1746-P1.